Fix:
   fix the problem when exit the reg window, the rect hidden.
Added:
    add goods sold detail and history report
Merge remote-tracking branch 'origin/master'

Conflicts:
	db/SimpleRoomManager.db
	roommgr/ui/main_window.py
Added:
    add user switch
Added:
    add user switch
Added:
    add user switch
Merge remote-tracking branch 'origin/master'

Conflicts:
	db/SimpleRoomManager.db
	roommgr/ui/main_window.py
Added:
    add user switch